A container filled with 15 jackfruits has a mass of 24.24 kg. The same container when filled with 10 pears has a mass of 2.24 kg. The mass of 1 jackfruit is eight times the mass of 1 pear. Find the mass of the container when it is empty. Express the answer in g.
1 kg = 1000 g

24.24 kg = 24240 g
2.24 kg = 2240 g

1 pear = 1 u
10 pears = 10 x 1 u = 10 u

1 container + 10 pears = 2240
1 container + 10 u = 2240 --- (1)

1 jackfruit = 8 u
15 jackfruits = 15 x 8 u = 120 u

1 container + 15 jackfruits = 24240
1 container + 120 u = 24240 --- (2)

(2) - (1)
120 u - 10 u = 24240 - 2240
110 u = 22000

1 u = 22000 ÷ 110 = 200

10 u = 10 x 200 = 2000

From (1):
1 container + 10 u = 2240
1 container + 2000 = 2240
 
1 container = 2240 - 2000 = 240

Mass of 1 container = 240 g

Answer(s): 240 g